I can’t identify the plant from the photo (maybe it’s hyssop), but the pope seems to be using leafy branches tied together with white tape.What kind of aspergillum does your parish use? Which would you prefer? A seminarian friend told me of the prank he pulled once, loosening the end piece with the holes. When the rector conducted the sprinkling rite, at the first flick of the wrist, the rounded end flew off the handle and nearly took out a window.
Please don’t try that at your church.